#include<iostream>
using namespace std;
int main()
{
	long long N;
	cin >> N;
	if (N > 0)
	{
		cout << "positive";
	}
	else if (N==0)
	{
		cout << "zero";
	}
	else if (N < 0)
	{
		cout << "negative";
	}
	return 0;
}